Horseshoe-punching machine



J. BROOK.

HORSESHOE PUNCHING MACHINE. APPLICATION FILED MAR 22, 1919. RENEWED OCT. 6', I920.

1,377,799. Patented. May10,1921.

4 SHEETS-SHEET I.

81mm M 01 J. BROCK HORSESHOE PUNCHING MACHlNE,

APPLICATION FILED MAR.22, 19:9. RENEWED OCT. 6, 1920.

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W O L Q 00 J. BROCK.

HORSESHOE PUNCHING MACHINE. APPLICATION FILED MAR; 22. I919. RENEWED OCT. 6, 1920.

Patented May W, 1921.

4 SHEETSSHEET 4.

avwawtoz JOSEPH BROOK, OF ERIE, PENNSYLVANIA, ASSIGNGP, 01E ONE-EIGHTH TO EDWARD DlEllT'ULINGr, F ERIE, PENNSYLVANIA, AND FIVE PER CENT. TO JOHN 3'. GRANT,

03E ERIE, PENNSYLVANIA.

HORSESHOE-PUNCHING MACHINE.

specification of Letters Patent. Patented May it), 1921.

Application filed March 22, 1919, Serial No. 284,421. Renewed October '5, 1920. Serial No. 415,220.

[0 Mi 1071,0772 it may concern:

Be it known that I, Josnrrr Bnoon, a citizen of the United States, residing at Erie, in the county of Erie and State of PennsyL vania, have invented new and useful limprovements in Horseshoe- Punching chines, of which the following is a speclhcation.

This invention relates to horseshoe punching machines and consists in certain 1mprovements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

The invention is illustrated in the accompanying drawings as follows Figure 1 shows a side elevation of the machine.

Fig. 2 a plan view of the machine.

Fig. 3 a section on the line 33 in F g. 4.

Fig. 1 a section on the line H in Fig.

Fig. an end view of the parts shown in Fig. 1.

Fig. 6 a section on the line 66 in Fig. 1.

Fig. 7 a rear view of a part of the machine.

1 marks the frame, 2 the table on the machine, 3 a guide-way for a horseshoe blank arranged on the table, 4 a horseshoe blank or bar from which the blanks are formed, 5 a main shaft, 6 a gear wheel driving the main shaft, 7 a crank mounted on the gear wheel 6, 8 a connecting link extending to a sliding head 9, 10 a guide-way mounted on the table on which the head 9 operates and 11 a dog pivotally mounted on the pm 12 on the head 9. The dog is adapted to engage notches 13 arranged in the horseshoe bar as the bar is rolled, there being a notch in each length of the bar equivalent to a horseshoe blank.

The blank or bar is clamped between the adjustable wall or shoulder 1a. This may be adjusted by a screw 15 arranged in the table. A movable clamping jaw 16 is mounted on the table opposite the jaw or shoulder 14 and is adapted when moved to clamp a blank against the shoulder 14;. The jaw 14 has the downwardly extending ears 17. A lever 18 is pivotally mounted between the ears by means of a pin 19. The lever is swingingly mounted on a pin 20 and operates in a cam groove 20 in the cam 20 arranged on the shaft 5. There are two series of punches 21 varying in'number depending on the shoes and may be varied in distance apart also depending on the shoes. These punches are mounted in blocks 22. A convenient manner of doing this is to thread the upper ends of the punches 21 and screw them into openings in the blocks 22. The block 22 is slidingly mounted with an under-cut groove 23 is a plunger 2 1.- The plunger 24: has a guide shank 25 which operates between the guides 26. The extension is provided with a pin 27 and a connecting rod 28 extends from the pin 27 to an eccentric 29 on the shaft 5. The eccentric 29 is so timed with relation to the cam groove 20 that in the cycle of the machine the clamping mechanism is brought together so as to effect a clamping action just as the plunger reaches the blank. The continued movement of the plunger forces the punches through the shoe blank.

The punches 21 extend through the guide blocks 30. These guide blocks 30 are removably mounted in a carrier block 31. The

carrier block 31 is slidingly mounted in guides 32 the block being provided with the guide projections 33 which operate in grooves in the guides 32. Straps 3 1 are secured by screws 36 to the carrier blocks 31 and extendupwardly so as to engage the blocks 22. These straps are also secured by screws 37 to a die carrier block 38. A die 39 is removably mounted in the die carrying block 38 and has the die openings corresponding to the punches so as to complete the punching action in the usual manner. A shoe blank is provided with the usual groove 1 and with the indentations 4P which are rolled into the blank spotting the points e the blanks are punched. The die .rrrying blocks 38 are supported by the guide face 40 arranged in the table 2. The punches 21 are locked in adjustment in the blocks 22 by means of a spring finger 11 which extends through slots 4L1 in the upper ends of the punches.

It will be readily seen that the entire punching mechanism can be moved lengthwise of the bar, the block 22, guide block 30 and die 39 all moving together because of the connection through the straps 34. The straps are somewhat wider than the bar 41- and openings 35 are provided in the straps so as to permit the movement of the bar through them.

It is desirable to out the blanks from the bar as a whole as well as to punch them. This is conveniently accomplished in the present machine as follows: A cutting blade 42 (see Fig. 7) is carried by the plunger 24 and operates over a shear blade 43 carried by the table (see dotted lines Fig. 7 The guide way 3 immediately in front of the shear has a movable portion 44 which is hinged on the table at 45 so as to permit the downward movement of the shear 42 thus carrying the bar with it. A spring 46 returns the bar 44 to its normal position. Overhanging guide ways 47 are arranged at each side of the bar, the overhanging portions extending slightly over the bar (see Fig. 2) but permitting the movement of the pawl or dog 11 between the guides so that the pawl 11 may move the bar forward to bring a notch 13 directly at the line of the cut made by the blade 42. The feeding mechanism acting with the pawl 11 is so timed as to move the bar forward while the jaw 16 is retracted. At the completion of this forward movement the clamp is just ready to engage the bar and immediately upon the completion of the forward feeding movement it has clamped the bar. The punch has already started downwardly and is just out of contact with the bar so that the continued movement punches the bar and shears the blade.

One of the difliculties of feeding horseshoe bars rolled as these are with the grooves for punching is that in the heating of the horseshoes there is created a slight difference in the lengths of the bar so that there is a slight variation in the distance between the grooves 4 and a slight difference as. to the bar as a whole. Consequently in order to bring the punches in register so as to take care of these variations the punches are movable relatively to the bar and furthermore as in my machine one series of punches is preferably movable relatively to the other series so as to take care of the variations in distance between the grooves. The mechanism for accomplishing this in the present machine is as follows :-A finger 48 rides the bar as it is pushed forward and engages the forward end of the blank as it has been cut. This is facilitated because of the notches 13 at the point where the blank is cut. The finger is provided with a slot 49 and hangs on a pin 50, the pin 50 being carried by ad justable blocks 51 secured to the tops of the guides 32. A pin 52 extends from the finger 48 in the path of the cam arm 53, the cam arm being carried by the jaw 16. It has the cam surface 54 which engages the pin 52 and thus lifts the finger 48 out of the path of the bar so as to permit the forward movement of the bar. The movement of the jaw 16 is so timed as to start before the completion of the feeding movement of the bar and consequently the cam surface 54 is carried out of the path of the pin 52 so as to drop the finger in time to engage the end of the blank as it is moved forward.

The finger is connected by a link 55 with the nearest strap or support 34 so that the series of punches farthest away from the shear is carried a distance somewhat less than the movement of the end of the finger 48, this distance being determined by the point at which the link 55 is connected with the finger 48 with relation to the pivotal point on the pin 50. A link 56 connects the opposite strap 34 from that connected with the link 55 with the lever 57. The lever 57 is pivotally mounted on a pin 58 extending between the guide ways 32 and a link 59 connects the lever 57 with the strap 34 of the series of punches nearest the shear.

issume that the bar or blank is slightly longer than normal. As it is forced forward by the feeding movement so that the notch 13 engaged by the pawl 11 is brought in alinement with the shear, the forward end of this bar engaging the finger 48 will move the series of punches and dies farthest away from the shear a distance approximatingbut slightly less than the movement of the end of the bar. This will take care of the expansion or error in the total length of the bar so as to move the punches to a position over the prints 4*. At the same time the series of punches nearest the shear are also moved but this movement is differentiated from the forward shear because the fixed peint to which the blank is moved is the line of the shear and the error as to this set of punches would be less than that of the forward set of punches. Consequently the link 59 is connected with the lever 57 between the point of connection of the link 56 and the pivot 58. Consequently the movement of the set of punches nearest the shear is less than the forward set of punches. This difference in movement may be varied by varying the position of the links 56 and 59 on the lever 57. A spring 60 secured to the guide 32 and secured to one of the straps 34 returns the punches to their initial or starting position after each operation. This initial position may be adjusted by a screw 61 arranged in the end of the guide frame 32.

What I claim as new is I 1. In a horseshoe punching machine, the combination of two series of punches in alinement; means for feeding a blank to said punches; and means controlled by variations in the blank for adjusting one series of punches relatively to the other.

2. In a horseshoe punching machine, the combination of two series of punches in alinement; means for feeding a blank to said punches; and means controlled by variations in the blank for automaticallycontrolling the adjustment of one series of punches relatively to the other.

3. In a horseshoe punching machine, the combination of two series of punches in alinement; means for feeding a blank to said punches; and means controlled by variations in the length of the blank automatically con trolling the adjustment of one series relatively to the other.

4. In a horseshoe blank punching machine, the combination of two series of punches in alinement; a way on which the blank may be advanced; means for advancing the blank; and means for adjusting the series of punches relatively to each other to accommodate variations in the length of the blank.

5. In a horseshoe blank punching machine, the combination of two series of punches in alinement; a way on which the blank may be advanced; means for advancing the blank; and means for automatically adjusting the punches corresponding to variations in the length of the blank.

6. In a horseshoe blank punching machine, the combination of a way; means for advancing the blank given distances along the way; a series of punches operating on the blank on'the way; and means for adjusting the punches relatively to variations in the length of the blank.

7. In a horseshoe blank punching machine, the combination of a way; means for advancing the blank along the way; two series of punches operating on the blank on the way; and means for adjusting the series of punches relatively to variations in the length of theblank.

8. In a horseshoe blank punching machine, the combination of a way; means for advancing the blank along the way; two series of punches operating on the blank on the way; and means for adjusting the series of punches relatively to variations in the length of the blank and to each other.

9. In a horseshoe blank punching machine, the combination of a way; means for advancing the blank given distances along the way; a series of punches operating on the blank on the way; and means actuated by the blank for moving the series of punches relatively to variations in the length of the blank.

10. In a horseshoe blank punching machine, the combination of a way; two series of punches; means for moving one of the series a distance varying as the blank varies; and means for moving the other series a distance proportionate to but different from the movement of the first series.

11. In a horseshoe blank punching machine, the combination of a plunger; a punch mounting slidingly mounted in the plunger; a punch block removably mounted in the mounting; punches arranged in the block; a movable die operating in con nection withthe punches; and a die carrier in which the die is removably mounted.

12. In a horseshoe blank punching machine, the combination of a plunger; a punch carrier slidingly mounted in the plunger; punches in the carrier; a die movably mounted and cooperating with said punches; and straps connecting said carrier and die.

18. In a horseshoe blank punching machine, the combination or a series of punches; away on which the blank is fed; a clamp for clamping the blank on the way in position to be punched; devices controlled by variations in the blank automatically adjusting the punches relatively to the blank; and means for actuating said devices, punches and clamp.

1 I11 a horseshoe blank punching machine, the combination of a series of punches; a plunger carrying the punches; a cutter for cutting the blank; and means actuated by the blank for adjusting the punches relatively to the blank.

15. In a horseshoe blank punching machine, the combination of two series of punches in alinement; means for actuating the punches; means for advancing a blank; means for shearing the blank; and means for adjusting the punches lengthwise relatively to the blank and to each other.

16. In a horseshoe blank punching machine, the combination of a series of punches in alinement; a plunger carrying the punches; and a shear blade carried by the plunger, said shear blade being arranged in alinement with the punches.

17. In a horseshoe blank punching machine, the combination of a way; means for advancing a blank a given distance on said way; two series of punches in alinement; a plunger carrying said punches; a shear carried by the plunger in alinement with the punches; and means for adjusting the punches relatively to and lengthwise of the blank and to each other in the plunger.

18. In a horseshoe blank punching machine, the combination of a way; means for advancing a blank a given distance on said way; two series of punches in alinement; a plunger carrying said punches; a shear carried by the plunger; and means for adjust ing the punches relatively to the blank and to each other in the plunger, said means being actuated by the blank.

19. In a horseshoe blank punching machine, the combination of a way; means for moving the blank a given distance on the way; a clamp for securing the blank on the way; a plunger; a series of punches carried by the plunger; a shear carried by the plunger; and means for automatically adjusting the punches relatively to the shear relatively to variations in the length of the blank.

20. In a horseshoe blank punching machine, the combination of a guideway; and shear blades arranged to operate on a bar on the guide-Way, the guide-way being provided with a yielding portion adjacent to the shear to permit the end of the bar being sheared to move with the shear blades.

21; In a horseshoe punching machine, the combination of two series of punches in alinement; means for supporting a blank in position to be punched; and means controlled by variations in the blank for adjusting one series of punches relatively to the other.

22. In a horseshoe punching machine, the

combination of two series of punches in alinement; means for supporting a blank in position to be punched; and means controlled by variations in the blank for automatically controlling the adjustment of one series of punches relatively to the other.

28. In a horseshoe punching machine, the combination of two series of punches in alinement; means for supporting a blank in position to be punched; and means controlled by variations in the length of the blank for automatically controlling the adjustment of one series of punches relatively to the other.

In testimony whereof I have hereunto set my hand.

JOSEPH BROOK. 

